Process of exsiccating or concentrating solutions



Aug. 26 v1924.' 1,506,647

, G. A. KRAusE PROCESS OF EXSICCA'ING OR CONCENTRATING SOLUTIONS I Filed 'June 19 1920 Geom; ALEXANDER KRAUN:

AHORA/sy Patented Aug, 1924i,

narran srarasrarnr opweg,

GEORG ALEXANDER. EL

EDUARE GREUTERT nacen, or MUNICH, GERMANY, AssIeNoR 'ro 'man a ein, or BASEL,

SVITZERLAND.

PROCESS 0F IEXS12('CAi'IlINi-V ORQONCENTEATING SOLUTIONS.

(GRANTED UNDER THE PROVISIONS 0F THE ACT 0F MARCH KnAUsE, Munich,

Application filed. June 19,

ALEXANDER Germany, residing at certain new and useful Improvements in the Process of Exsiccating or Concentrating Solutions (for tion in Germany Britain, J une 16,

which y January 29, 1917 June 9, 1920; Holland, J une 18, 1920;

1920; Switzerland,d une 8,

l have led applica- `Italy, Great 1920) and l do hereby declare the following to bev a' full, clear,

and exact description of the invention, such as will enable others skilled'in the art t o which it appertains tomake and use the same. i 1 My invention relates to improvements in the process of exsiccating or concentrating solutions and oi carrying out chemical reactions and the object of my invention is to provide a new method which Oilerscertain advantages hereiiiaiterl more particularly referred to over use. a

1n describing the methods heretofore in my invention l refer to the drawing herewith which is a diagram indicating a drying or in vertical section,

Huid intended for within an evaporating or ment and spread o mist against which process is already known in exsiccating compartment as hereinafter explained, which the evaporation is atomized drying comparu ut in the form of a fine a current of air is conducted, the rapidity and force with which the said mist moves,

the said current to trate the former at its edge only.

known process is made to rent of air in this permitting, however,

through and peneass P rThe curtravel upward, from the .bottom tothe top.

ln the said process while the main portion of the exsiccated powder,

process, 'settles in the product of the the bottom part of the drying compartment, a larger or smaller portion will be lost, being taken along by the movement of the air-current and escaping with the latter.

ln accordance with the present invention the air-current wi the mist referred to ll be conducted against in the opposite direction,

namely from top to bottoni., ln this way l attain exsiccated product only, namely, compartment and simplifies the the advantage that all of the travels in. one directionV towards. the bottom of the which 'considerably cheapens collection and precipitation of the powder.

rcordingly,

a, 192i, 4i sur. L., iaia) Anot er advantageot my invention resides in t e circumstance that the powder already dried comes into contact only with air the temperature ot which has been reducedy in the rapidly rotat-1 ing mistwhile when the current ot air is conducted from the bottom main portion of the dry powder is'bound to pass in dropping the hot air before the latter has come into contact with the mist,

in case of equal sensitiveness oi the dry powder against the action ci? temperatures, hi her temperatures of the air may be used in my present invention.

rlhe drawing shows a steam-turbine wheel T in the middlek ofthe compartment and causing the rapid revolution required for the atomization of the solution on a dislr or plate S upon. which it is being lied through the the top at i entering in currents K which, owing to theforce of the rapidly trat/eb ing mist N, are unable to enter and penetrate the latter to any extent butare forced to turn aside, being able to penetrate the said mist only at its extremeedges. Finally the air escapes through the -outlet'i near the bottom of the compartment.

rlhis conduction of the air from top to bottom may be also resorted to iii those cases where the mist spreads in a cylindrical or conical shape.

l would mention that in the methods ci exsiccation connected with the atoinization of liquid it is already known'to conduct the eXsiccating agent, 'that is the. air-current referred to, through the drying compartment in downward direction either in counter-current or in a current setting-in in the same direction with the atomized li uid intended"I for exsiccation. But in t ese heretofore known processes the drying process goes on within the whole drying compartment, with the result thatthe best possible equal distribution oi both the liquid and the exsiccating air takes place within, the whole compartment. Consequently it is unavoidable with these processes that the drying air in uiicooled or partially una cooled condition comes into contact with already exsiccated particles. lin conti-fadis' tinction with this the present invention solves the problem by the method L above described which consists in to the top, the

pipe F. The air is admitted 'at ,dryinfr process is chiefly completed Within the disk-shaped mist spreading fromA the `tures of the air becomes practicable.

Iclaimzl Theherein described method of desiccat- A ingl liquid or semi-lquid substances, which consists in feeding the Substance 'to be treated in unatomized condition into y a closed chamber, atomizing the .substance by and substantially. parallel with the spreading it out horizontally vinto the form of a relatively thin disc in said chamber, introducing a current of a gaseous drying medium into said chamber in a plane rabove disc of the substance being treated, and exhausting said currentout of v'the chamber in a plane below said disc.

- In testimony vwhereof I hereunto sigggnature in the presence of two Witnesses.

' GEORG ALEXANDER KRAUSE.

l Witnesses: i

PAUL DREY, ANNA NIEDERMAIER.

aiiix my 

